The document outlines the phases of perioperative care, including preoperative, intraoperative, and postoperative stages involved in surgical treatment. It discusses various types of surgery (elective, emergency, major, minor) and emphasizes the importance of patient preparation, consent, and risk assessment prior to surgery, as well as procedures and equipment needed throughout each stage of care. Additionally, it addresses intraoperative and postoperative procedures aimed at preventing complications and facilitating recovery.